There aren't many things that are universally cool, and it's cool not to litter. I'd never do it.
I really don't understand people. First, people actually still smoke, despite the overwhelming evidence indicting cigarettes as the harbingers of death they are. Second, littering. What the hell? Wasn't that the theme of the early 80's--don't litter? Before global warming became vogue, littering was the hot topic.
And Bette Midler running around on Earth Day in a goofy outfit.
Ok, maybe Earth Day isn't the most credible reference.